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BiologyInhabits rocky weedy areas from the shore to at least 60 m. Generally solitary but may aggregate in groups of 10-15 individuals in midwater. Feeds mainly on sessile and encrusting organisms, with sponges and ascidians predominating (Ref. 26966). Feeds on bottom invertebrates, also seen feeding mid-water on zooplankton, likes to bite diver's fingers (Ref. 9002).